一种单级图腾柱无桥交流发光二极管驱动电源  

A Driving Power Supply for the ACLED Based on the Single-Stage Bridgeless Totem Pole

作　　者：薛晓明[1] 陈宏 

机构地区：[1]常州信息技术学院计算机分院,江苏常州213164 [2]江苏财经技术学院电子工程系,江苏淮阴223003

出　　处：《电测与仪表》2014年第21期115-119,共5页Electrical Measurement & Instrumentation

基　　金：江苏省常州市科技支撑计划(CE20110065)

摘　　要：针对交流发光二极管(AC LED)直接与市电连接存在效率低、谐波含量高以及频闪的问题,提出一种交流发光二极管(AC LED)驱动电源。提出的驱动电源采用单级图腾柱无桥结构,并辅之高频方波驱动策略,具有使用元件少、控制简单的优点。理论分析和实验证明:提出的驱动电源在输入电压10%波动范围内,效率大于90%,功率因素大于0.95,且无任何频闪。Alternating current light emitting diode（ AC LED）works in declined efficiency and with high harmonic con-tent and flickers when it is directly linked with the commercial power. In view of these problems, this paper put for-ward an AC LED driving power supply, which used fewer elements and could be easily controlled by adopting abridgeless structure of single - stage totem poles and the driving strategy of high frequency square waves. Theoreticalanalyses and experiments have shown that within 10% fluctuation of the input voltage, the ACLD with the proposedpower supply works in the efficiency of more than 90%, with the power factor of above 0. 95 and without any flickers.

关 键 词：交流发光二极管 单级无桥功率因素校正 驱动电源 图腾柱 

分 类 号：TM76[电气工程—电力系统及自动化]